【新型多槽式气体润滑轴承及其所支承的磨头主轴部件的研究】景岗.pdf

DissertationSubmitted toHuazhong UniversityofScience andTechnologyfor theDegree of Doctor of Philosophy in Engineering Research on a New Gas-Lubricated Journal Bearing with Multiple Grooves and Spindle Head Equipped with the Bearings Candidate:Jing Gang Supervisor:Professor Chen Riyao Professor

本文已成功地研制和开发出了锯齿形多槽式动静压气体润滑这一新型轴承。此外,本文还对静压气体润滑轴承承载力的工程计算法和具有高刚度的气体润滑轴承进行了分析和研究,提出了计算小孔式静压气体润滑轴承承载力的新型数学模型,计算和实验结果表明:该模型的精度目前是最高的.在对目前国外几种带反馈控制的高刚度气体润滑轴承进行分析和比较的基础上,提出了一种带可变节流器的压力反馈控制型高刚度气体润滑轴承,并对其稳态性能进行了分析和计算,结果表明:该轴承在一定静载荷范围内,能够实现无穷大静刚度、甚至负刚度.关键词:精密和超精密加工.动静压气体润滑轴承.表面节流.有限元分析.轴承性能.

calbutalsoexperimentalresearchshowthat thisnewbearinghasbeenexploitedsuccess fully by the work donein this thesis.In addition,in this thesis,math-models for calcu lating theloadcapacity of aerostaticbearinginengineeringare studied,anda new modelisproposed.